baber/WOPTO huggingface dataset:
Patent GB-1470024-A (GB)
Title: Electrical contact for a printed circuit board connector
IPC: H01R12/50
Filed: 1975-07-08
Abstract: 1470024 Two-part couplings BENDIX CORP 8 July 1975 [31 July 1974 (2)] 28700/75 Heading H2E A contact 10 for a p.c.b. connector comprises a shaft 11 and two resiliently deflectable arms 12, each having a bent portion 16 facing the other arm and one arm having a projection 17, wherein said contact may be mounted in one of a plurality of slots 32 in a plastics base 30 which can be moved up the arms 12 to bring end faces 19 into contact. A plurality of contacts 10 may be mounted in a base 30 within a housing 40 to form a connector (Fig. 6), said housing having an opening 42 to receive a p.c.b. 50. The base 30 may be raised, to bring portions 16 into contact with each other and with eyelet terminals 51, by a system of levers and pivots mounted between the base 30 and circuit board 50 (Fig. 7, not shown).
Patent GB-744039-A (GB)
Title: Improvements in apparatus for rolling threads, rifling and like profiles
IPC: B21H3/04
Filed: 1952-02-19
Abstract: 744,039. Rolling. KRUSE, H., and FETTE, C., [trading as FETTE PRAZISIONWERK. ZEUG-FABRIK, W.]. Feb. 19, 1952, No. 28779/54. Divided out of 743,977. Class 83 (4). In a set of freely rotatable rolls for forming threads, helical grooves, &c. in which the rolls are relatively offset to follow the same helical path, the rolls have relieved entry profiles a, b, c, Fig. 1, arranged so that when projected on to a common plane the profile ridges a<SP>1</SP>, bl, c<SP>1</SP> are in a straight line d. The bases of the profile are not relieved and lie on the straight line g passing through the bases of the main profiles. Each roll is in the form of an annulus W, Fig. 2, freely rotatable on an eccentric part E of a rotatably adjustable spindle A. Each end of the roll is relieved so that the rolls may be reversed when worn at one end.
Patent GB-918931-A (GB)
Title: High frequency transistor circuits
Inventor: JONES JAMES DOUGLAS
IPC: H03D7/12
Filed: 1960-08-19
Abstract: 918,931. Transistor frequency changing and tuner circuits. PYE Ltd. Aug. 15, 1961 [Aug. 19, 1960], No. 28815/60. Classes 40 (5) and 40 (6). In a transistor mixer circuit for high-frequency signals, means are provided for feeding back a portion of the output signal to the input circuit so as to substantially cancel out unwanted feed-back. Fig. 1 shows a mixer circuit in which the R.F. input signals and the local oscillator signals are both applied to the base of transistor T1 and the I.F. output is taken from the collector circuit. In order to compensate for unwanted feed-back of the I.F. signal through the internal impedances of the transistor, a feed-back network comprising a transformer TR1, a resistor Rn and a capacitor Cn is provided, the values of Rn and Cn being so adjusted that the unwanted feed-back is substantially cancelled by the feed-back from the network. In a second embodiment, Fig. 2 (not shown), an autotransformer is employed in place of TR1. In a tuner unit, Fig. 5, for operation on Bands I, II and III, input signals from the aerial input socket AS are fed via a wave trap 4, tuning coil section 51, to amplifier T2, connected in grounded base configuration by capacitor C2 and having A.G.C. signals applied to the base. The output from T2 is coupled to the mixer stage T3 by a band-pass transformer comprising switched coil sections S2, S3. This transformer has coupling loops M for Band III operation in series with which can be switched further inductors for lower frequency working. The secondary of this transformer is fed to the base of the mixer T3 together with output from local oscillator T4, an impedance match being made between the band-pass transformer and the mixer by capacitors C3, C4. The mixer operates as described with reference to Fig. 1, and the oscillator is described in Specification 918,932.
Patent GB-193377-A (GB)
Title: A governor for engines and motors
IPC: G05D13/00
Filed: 1922-10-23
Abstract: 193,377. Akt.-Ges. Weser. Feb. 18, 1922, [Convention date]. Stop-gear.-In an inertia governor wherein the weight b moves pawls d, e into and out of engagement with a controlling-lever g, at excessive speeds the pawl e is locked outwardly so that the lever g keeps the throttle or other control device wholly or partly closed. An inertia mass p is pivoted below the pawl e and is connected to a cam t which is thrown up beneath the pawl and locks it in the out position. The cam is disengaged and t'he pawl is released by a handle v on the weight p.
Patent GB-633553-A (GB)
Title: Improvements in or relating to a hearing aid apparatus
Inventor: TRESISE RALEIGH E
IPC: H04R25/04
Filed: 1946-09-27
Abstract: 633,553. Deaf aids. PARAPHONE HEARING AID, Inc. Sept. 27, 1946, No. 28887. Convention date, Dec. 21, 1945. [Class 40 (iv)] A portable hearing aid has a chassis of mouldable insulating material, preferably plastic, which is provided with recesses and openings for the reception of the components and is enclosed in the upper part of a readily detachable case, the batteries A, B   being located underneath as in Fig. 1:  The input and driver valves 58, 59 are mounted on a sub-chassis S, Fig. 16, located in recesses 36, 37 at one side 13, Fig. 4, while the output valve 60 is in a recess 35 at the other side 12, Fig. 3. The microphone, which has a perforated cover-plate 62 and grill 63, and output impedance 43 are disposed in recesses 18 and 19 at the front, Fig. 5, while the connection panel 47 and volume control 34 are mounted in recesses and openings at the back, Fig. 2. The B battery supply includes a switch 57 and the output is taken from a connector 89. The casing consists of a front section 72 and two rear sections 73, 74 having rails 76 for engaging guide channels 75 on either side of the front section. When the parts have been assembled the chassis is locked in position by the output connector 89. A casing grill registers with the microphone grill 63 and a clip 90 is provided for supporting the apparatus in the pocket.
Patent GB-467066-A (GB)
Title: Improvements in or relating to phase modulating circuit arrangements
IPC: H03C3/26
Filed: 1936-10-23
Abstract: 467,066. Valve modulating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 23, 1936, No. 28908. Conventiondate, Oct. 26, 1935. [Class 40 (v)] A phase modulator comprises a "neutralized carrier frequency stage with means for applying modulating potentials to vary the effective neutralization. In one embodiment, Fig. 1, a carrier frequency source 8 feeds the grid circuit of a valve V1, a neutralizing circuit comprising a condenser NC and part of the output coil 4 being provided as shown. A pair of push-pull modulating valves V2, V3, the grids of which are supplied with modulating potentials from a source 7, shunt the impedances Z1, Z2 which together with condensers 3, 31 respectively are connected between the cathode tapping of the coil 4 and its anode and grid ends, respectively. The varying impedances of the valves V2, V3, unbalance the neutralizing circuit and produce regeneration or degeneration as the case may be to advance or retard the phase of the output from the valve V1. The circuit 4 may be tuned to a harmonic of the carrier source. In a further embodiment, Fig. 2, a pair of push-pull valves V1 and V1<1> are fed with carrier frequency from a source 8, one of the valves being under-neutralized and the other over-neutralized by the usual neutralizing condensers NC, NC<1>. Modulation potentials from source 7 are also fed to their grids and the phase of the carrier in the output circuit 4 depends upon the relative outputs from the valves, which depends upon their grid potentials. In another embodiment, Fig. 4, the source 8 is dispensed with and the valves V1, V1<1> are made to oscillate by back-coupling the anode to the grid circuits through a piezocrystal P with its neutralizing condenser FP. The electrical centre of the cathodes may be earthed through a resistance element 36 such as " Thyrite " (Registered Trade Mark) which has a non-linear characteristic of such a nature that a rise of anode current due to accidental cessation of the generated oscillations produces a large change in the grid bias and consequent limitation of the anode current. In a similar circuit, Fig. 3 (not shown), anode modulation is used.
Patent GB-996279-A (GB)
Title: Hair straightening compositions and method of use
IPC: A61K8/46
Filed: 1963-07-22
Abstract: The invention comprises water-soluble salts of a mercapto lower alkyl amine with a film-forming linear polymer of a water-soluble ethylenically unsaturated monomeric acid.  The acid is preferably acrylic acid although methacrylic, ethocrylic, maleic, itaconic, vinyl sulphuric or styrene sulphonic acids are specified. The term lower alkyl is used to mean alkyl groups containing up to 4 carbon atoms.  The exemplified amine is 2-mercaptoethyl amine although various primary, secondary and tertiary amines are specified. Polymer compositions comprise 2-mercaptoethyl ammonium polyacrylate in water together with glycerol, polyethylene glycol sorbiton monooleate, isopropyl palmitate and perfume.  The salt may be formed in situ.  The composition is used as a hair straightener.ALSO:A composition for treating hair or other keratin-containing fibre comprises a water-soluble salt of a mercapto lower alkyl amine with a film-forming linear polymer of a water-soluble ethylenically unsaturated monomeric acid, preferably 2-mercaptoethyl ammonium polyacrylate.  In addition to water the composition may also include glycerine, polyethylene glycol sorbitan monooleate, isopropyl palmitate, perfume and sodium hydroxid as a pH regulator.
Patent GB-1037460-A (GB)
Title: Circular hosiery machines
IPC: D04B15/58
Filed: 1964-07-14
Abstract: In a multifeed circular machine the yarn guides 6 at each feed all pivotally supported in a carrier 5 pivoted to a ring 3 surrounding the upper end of the needle cylinder, Figs. 2 and 3, (not shown). Supported beneath the ring 3 is a cam ring 8 which is capable of being manipulated either manually or electro-magnetically under the dictates of control mechanism such that it is partially rotated and engages with its cam surfaces 8a tappet members 12 one of which is positioned beneath each carrier 5.  The camming action is such that the tappet members 12 are raised and lift the carriers and yarn guides simultaneously to an inoperative position.
Patent GB-358710-A (GB)
Title: Improvements in domestic and like fire-places
IPC: F24B1/193
Filed: 1930-09-27
Abstract: 358,710. Grates. HOPKINSON, J., 9, Alice Street, Hamer, Rochdale. Sept. 27, 1930, No. 28970. [Class 126.] A fuel holder for a domestic or like fireplace is formed of a perforated metal sheet or plate having an upwardly extending part g<1> forming the front and a rearwardly extending part g<2> forming the bottom, the top edge of the part g<1> being adapted to be secured in the fireplace, and the rear edge of the part g<2> to be applied against or to be built into, the rear wall. In the form shown, a bar h welded or otherwise attached to the top of the part g<1> has downturned ends h<1> which hook over end portions f of one of the ordinary front bars, the rest of the front grate bars being cut away. The bottom g<2> rests on the ordinary grate bottom, and brickwork i is built in front of the ordinary back of the fireplace to diminish the depth of the fuel space. The front g<1> is bowed outwardly. The ends of the top bar h are. in an alternative construction, formed with lugs for bolting to the sides of the fireplace, instead of the hooked ends h<1>.
Patent GB-405409-A (GB)
Title: Improvements in or relating to bearings
IPC: F16C27/04
Filed: 1932-10-17
Abstract: 405,409. Yielding bearing-supports. AKTIEBOLAGET SPONTAN, 2, Norrmalmstorg, Stockholm. Oct. 17, 1932, No. 28974. Addition to 400,260. [Class 12 (i).] A radial-thrust bearing 4 is supported by a surrounding ring 6 which is suspended on annular members 8 the outer surface of which contacts the inner surface of the ring 6 and the bearing housing. The rings 8 may be of L- shape in cross-section. The rings 8 may, as shown, be carried by rings 12 suspended on rings 13 carried by the bearing housing 5. The number of rings 12, 13, which are in tension and compression respectively, may be increased.
Patent GB-734470-A (GB)
Title: Improvements in or relating to the cleaning and grading of asbestos fibre
IPC: D02G3/20
Filed: 1953-10-21
Abstract: 734,470. Sifting-apparatus. BOURNE, R. F., and CHEYNE, D. G. Oct. 21, 1953 [Oct. 21, 1952], No. 29076/53. Class 117. Asbestos fibres &c. are cleaned or graded by being passed horizontally through a closed space the bottom and upwardly divergent sides of which form a trough of screening mesh, in the lower part of which are rotary beaters of narrow elongated form arranged radially and moving closely to said lower part. In one embodiment, an exploded view of which is shown in Fig. 2, a casing 1 comprises removable top 5, sides 4 and hopper-shaped bottom 6. The U-shaped cradle 8 which supports the screening material is secured to beams 7 fastened to the casing, and comprises two halves with wide openings 9 separated by arcuate bands 10. The screening material 35, Fig. 3, is clamped to the cradle 8 by adjustable flexible straps 12, tightened by quick-straining buckles 15. The charge enters through opening 21 at one end of the top 5 of the casing and at the other end a tangential discharge duct 22 registers with an opening 23 in the cradle 8 through which the material, which has not passed through the screen, is guided by a deflector plate 24. For agitating the material in its passage through the screening region, a rotor 11, within the cradle 8, is driven by a motor 25. The rotor comprises a tubular member 26 carrying end flanges 27 between which are a plurality of radially-disposed bars 28 forming paddles. Short shafts, bolted to member 26, extend through elongated holes 32 in the ends of the cradle 8 and the ends 3 of the casing, into bearings, the height of which may be adjusted to regulate the separation of the rotor from the cradle. The opening 23 is provided with curved members 33, 34 facilitating the outward passage of the material and a pivotally mounted scoop may be provided capable of being tilted so as to close the opening. In a modification, a long length of screen material is mounted on rolls 36, 36a, Fig. 4, entering and leaving the casing through slots 37, so that a new area of material may be exposed to the cradle openings. In a further embodiment, sections of the screening material have a different mesh from inlet to outlet and a plurality of hoppers replace the single hopper of the first embodiment, Fig. 21 (not shown). Various arrangements of a number of the cleaner and/or grader units for performing a variety of separations are described, Figs. 9 to 20 (not shown).
Patent GB-1222844-A (GB)
Title: Improvements in or relating to air cushion vehicles having sidewalls
Inventor: LATIMER-NEEDHAM CECIL HUGH
IPC: B60V1/00
Filed: 1968-06-19
Abstract: 1,222,844. Air cushion vehicles. BRITISH HOVERCRAFT CORP. Ltd. 5 June, 1969 [19 June, 1968], No. 29135/68. Heading B7K. A side wall air cushion vehicle has one or more baffle plates 15 extending along at least part of the outside wall 16 of the vehicle, as shown (Fig. 2) and acting as roll suppressors by deflecting water thrown up by the passage of the vehicle's side walls through the water. The baffle plate 15 can be retractable into the side wall by means of an hydraulic ram 17 mounted on a suitable bracket 20; seals 19 preventing the unwanted ingress of water into the side wall. In other embodiments the baffle plate is fixed by rivets to the outside of the wall (Fig. 1, not shown) or is integrally formed with the side wall of the vehicle.
Patent GB-416615-A (GB)
Title: Improvements in or relating to the production of titanium pigments
IPC: C09C1/00
Filed: 1933-10-20
Abstract: Pigments containing lead titanate are obtained by calcining at say 600--1000 DEG  C. a mixture of powdered titaniferous ore and a lead compound or metallic lead.  Ilmenite, titaniferous magnetite, or rutile may be used before or after dressing, and the lead p  compound may be the oxide, basic carbonate, or acetate.  The lead compound or metallic lead may be used in relatively small quantities, say 1--10 per cent of the weight of the ore, or quantities up to or in excess of the equivalent of the titanium in the ore may be used.  In any case a part of the lead compound used may remain as such or as oxide in the product, which has excellent rust proof qualities. Specification 405,340 is referred to.  The Specification as open to inspection under Sect. 91 includes also the following subject-matter:--the use, in the process, of ore residues such as the undissolved sludge obtained when treating titanium ores with acid. This subject-matter does not appear in the Specification as accepted.
Patent GB-897366-A (GB)
Title: Reusable fitting for braid-covered hose
IPC: F16L33/22
Filed: 1958-09-11
Abstract: 897,366. Hose couplings. TITEFLEX Inc. Sept. 11, 1958 [Oct. 31, 1957], No. 29189/58 Class 99(1). A re-usable hose fitting assembly for a braidcovered flexible hose 26 made of plastic, e.g. P.T.F.E., comprises a body 10 with a fluid line connector 12 brazed at one end, and a tubular insert 11 at the other end for full insertion into the hose 26 and having an outside surface 28 diverging towards a shoulder 24 on the body 10 and flaring the end portion of the hose 26, a frusto-conical steel ring 40 being inserted between the braid 36 and the plastic tube 34 and deformed by an internally tapered clamping
Patent GB-960271-A (GB)
Title: Control valve for single-acting servo-motors, especially for power lifts in agricultural tractors
Inventor: BRANDT RICHARD
IPC: F15B13/04
Filed: 1961-08-12
Abstract: 960,271. Fluid-pressure servomotor control systems. RHEINSTAHL HANOMAG A.G. Aug. 12, 1961, No. 29195/61. Heading G3P. [Also in Division F2] A valve controlling a single-acting ram, such as that of a tractor mounted agricultural implement, comprises a hollow closure-member 2 with an annular groove 7 slidable in a housing into which open supply and exhaust passages 3, 4, and two further passages 5, 6 leading, respectively, to the ram and either one or more further valves, not shown, for controlling other rams or exhaust. The member 2 is movable manually through a pinion 8 and a rack 9 formed on the member 2; a spring-loaded detent 10 coacts with the pinion teeth. To extend the ram, the member 2 is moved to the right to interconnect passages 3, 5; at the end of the ram stroke the supply pressure rises until it unseats a relief valve 12 to enable the supply fluid to act on the right end of the member 2 and move the latter leftwards against the action of the detent 10 until the member 2 is clear of a casing extension 16 whereupon the fluid flows to the exhaust passage 4 by the hollow bore 15 of the member 2. The relief valve 12 then reseats and the member 2 rests in the "hold" position wherein passage 6 is connected to the supply passage 3. Upon translating the member 2 further leftwards into the "lower" position, passages 3, 6 remain connected and passage 5 is open to exhaust passage 4 via the bore 15. With the member 2 in the "lower slowly" position i.e. still further to the left, the left end of the bore 15 co-operates with an extension on the adjacent end of the casing to throttle the fluid passing to the exhaust passage 4; this position is adjustable by means of a stop 17.
Patent GB-1032470-A (GB)
Title: Manufacture of flat spiral inductors
Inventor: GLAISTER RAYMOND MALCOLM
IPC: B23H9/00
Filed: 1964-07-17
Abstract: 1,032,470. Making spiral inductors by spark erosion; making electrodes. STANDARD TELEPHONES & CABLES Ltd. July 17, 1964, No. 29338/64. Heading B3A and B3V. A flat spiral inductor is made by spark eroding the complementary part of a conductive layer on an insulated backing. The spark electrode 14, Fig. 5 (not shown), is formed by wrapping on a hollow mandrel 13 a strip 14 of tantalum which forms the working part 14a of the electrode, and a narrower spacing strip 15 of copper. In an alternative embodiment, Fig. 4 (not shown), the two strips are initially equal width and the copper is subsequently cut back by chemical or electro-chemical etching. The amount of cutback is made to correspond with the thickness of the coating to be renewed. A master electrode constructed as in Fig. 5 may be used to make any number of secondary electrodes by spark erosion. The erosion operation, Fig. 6 (not shown), is performed in the dielectric bath 22 to which the dielectric liquid is circulated through the hollow electrode 24. The work-table 28 and electrode 24 are relatively movable in mutually perpendicular directions. A D.C. source 25 is used to charge a capacitor 27 through resistor 26. To obtain a plane working surface on the electrode, a plane slab of metal 28 is placed on the table 26 and used with reverse polarity to erode the working surface of the electrode.
Patent GB-766802-A (GB)
Title: Improvements in the manufacture of electric cables and insulated wires
Inventor: WENTWORTH VICTOR HAROLD
IPC: H01B13/06
Filed: 1953-10-23
Abstract: Insulated wires or cables or parts thereof are manufactured by applying a layer of thermoplastic insulating or protecting material, such as polyethylene, polystyrene or a polydimethylsiloxane, in its normal thermoplastic state over a conductor or conductors, in the form and position which it is to occupy in the finished product, and subsequently subjecting it to high energy radiation whereby it is con verted by cross-linking between molecules to a tougher and more elastic condition.  The radiation may be produced in an atomic pile, from a gamma-ray source or may be highenergy electrons or X-rays.ALSO:Insulated wires or cables or parts thereof are manufactured by applying a layer of thermoplastic insulating or protecting material, such as polyethylene, polystyrene, a polydimethylsiloxane, or natural rubber, in its normal thermoplastic state over a conductor or conductors, in the form and position which it is to occupy in the finished product, and subsequently subjecting it to high energy radiation whereby it is converted by cross-linking between molecules to a tougher and more elastic condition.  The radiation may be produced in an atomic pile, from a gamma-ray source or may be high energy electrons or X-rays.ALSO:Insulated wires or cables or parts thereof are manufactured by applying a layer of natural rubber in its normal thermoplastic state over a conductor or conducters, in the form and position which it is to occupy in the finished product, and subsequently subjecting it to high energy radiation whereby it is converted by cross linking between molecules to a tougher and more elastic condition.  The radiation may be produced in an atomic pile, from a gamma-ray source or may be high energy electrons or X-rays.
Patent GB-853772-A (GB)
Title: Improvements relating to mica paper
IPC: D21H13/44
Filed: 1957-09-18
Abstract: Mica paper is formed from a slurry of mica particles, generally of 0.1-1 microns in thickness, in aqueous potassium silicate solution. The slurry obtained is formed into a paperlike sheet and thereafter dried, preferably at a temperature not exceeding 150 DEG C.  The K2O:SiO2 ratio is preferably from 1 to 1.5 to 1 to 4 and the silicate solution employed generally contains from 40 to 80% by weight of water.  The initial mica slurry may contain 0.5 to 5% by weight of mica and the silicate solution may be employed in amounts from 10 to 50 parts by weight per part of mica in the slurry.  The mica may first be heated at 700-900 DEG C. before grinding to size, preferably in an aqueous medium, which may be the silicate solution employed. Residual water may be removed from the sheet by calendering at 110-175 DEG C. or the mica sheet from the paper making screen may be dried at elevated temperature and then pressed at 200-1000 p.s.i.  In a typical example the tensile strength was increased to 7,200 p.s.i.